The general lesson is that if some part of government fails in its function, it will most likely be given greater funding and power. Of course, the purpose of this is not to reward failure; the thinking would be that more money and power will enable the agency to solve the problem. But the effect is that government grows when social problems grow, and thus it is not in the government’s interests to solve society’s problems.
-Michael Huemer ( The Problem of Political Authority)
Or put otherwise, it is not in the best and self-interest of the bureaucrats deputized to solve that problem to actually do so. Thus it remains, as really, who truly wants to work themselves out of job?
(H/T: Cafe Hayek)